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PrincipalUtil.javaAPI DocAndroid 1.5 API2699Wed May 06 22:41:06 BST 2009org.bouncycastle.jce

PrincipalUtil

public class PrincipalUtil extends Object
a utility class that will extract X509Principal objects from X.509 certificates.

Use this in preference to trying to recreate a principal from a String, not all DNs are what they should be, so it's best to leave them encoded where they can be.

Fields Summary
Constructors Summary
Methods Summary
public static X509PrincipalgetIssuerX509Principal(java.security.cert.X509Certificate cert)
return the issuer of the given cert as an X509PrincipalObject.

        try
        {
            ByteArrayInputStream    bIn = new ByteArrayInputStream(
                cert.getTBSCertificate());
            ASN1InputStream         aIn = new ASN1InputStream(bIn);
            TBSCertificateStructure tbsCert = new TBSCertificateStructure(
                                            (ASN1Sequence)aIn.readObject());

            return new X509Principal(tbsCert.getIssuer());
        }
        catch (IOException e)
        {
            throw new CertificateEncodingException(e.toString());
        }
public static X509PrincipalgetIssuerX509Principal(java.security.cert.X509CRL crl)
return the issuer of the given CRL as an X509PrincipalObject.

        try
        {
            ByteArrayInputStream    bIn = new ByteArrayInputStream(
                crl.getTBSCertList());
            ASN1InputStream         aIn = new ASN1InputStream(bIn);
            TBSCertList tbsCertList = new TBSCertList(
                                            (ASN1Sequence)aIn.readObject());

            return new X509Principal(tbsCertList.getIssuer());
        }
        catch (IOException e)
        {
            throw new CRLException(e.toString());
        }
public static X509PrincipalgetSubjectX509Principal(java.security.cert.X509Certificate cert)
return the subject of the given cert as an X509PrincipalObject.

        try
        {
            ByteArrayInputStream    bIn = new ByteArrayInputStream(
                cert.getTBSCertificate());
            ASN1InputStream         aIn = new ASN1InputStream(bIn);
            TBSCertificateStructure tbsCert = new TBSCertificateStructure(
                                            (ASN1Sequence)aIn.readObject());

            return new X509Principal(tbsCert.getSubject());
        }
        catch (IOException e)
        {
            throw new CertificateEncodingException(e.toString());
        }